scripts/Bootstrap/Pmodules/modulecmd.in: bugfix: get_family() now returns...

scripts/Bootstrap/Pmodules/modulecmd.in: bugfix: get_family() now returns empty string, if no modulefiles are installed

scripts/Bootstrap/Pmodules/modulecmd.in

@@ -668,10 +668,14 @@ subcommand_avail() {
 }
 
 get_families () {
+	if [[ ! -d "${modulepath_root}" ]]; then
+		echo ""
+	else
 	{
 		cd "${modulepath_root}"
-		echo *
+		ls -1
 	}
+	fi
 }
 
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